CN204324684U - For the lifting tooling of nuclear power plant's fuel screen work - Google Patents

Abstract

The utility model provides a spreader tooling used for the fuel grid of a nuclear power plant. The spreader tooling includes a spreader frame and a plurality of hanging posts; one end of each hanging post is arranged in the hanging frame. , and is positioned on the spreader frame by a fixing device, the suspension column extends downward relative to the spreader frame, and the other end of the suspension column is provided with a lifting part, through which the lifting part makes The hanging column fixes the fuel grid to be hoisted; a plurality of hoisting parts are arranged on the sling frame, and the hoisting parts are used to hoist the sling tooling by rigging and a crane. The utility model is simple in structure and easy to implement for the hanger tooling used for the fuel grid of the nuclear power plant, and the operation of hoisting the fuel grid is simple, less time is spent on personnel and machinery, and a large amount of construction period can be saved.

Description

Spreader tooling for fuel grids in nuclear power plants

technical field

The utility model relates to the field of hanger tooling, in particular to the hanger tooling used for nuclear power plant fuel grids.

Background technique

In the field of nuclear power, nuclear power plant fuel grids usually include fresh fuel grids and spent fuel grids, and each grid is composed of multiple grid units. The wall thickness of the conventional grid is about 1.9mm, and the fuel grid is easily deformed during the hoisting process.

In addition, the hoisting of similar structures is usually hoisted by welding lugs or binding with slings. Due to the special properties of the fuel grid structure, its surface cannot be welded, so the binding method is likely to cause hoisting instability and deformation.

Utility model content

The technical problem to be solved by the utility model is to provide a lifting tool for nuclear power plant fuel grids in order to overcome the defect that the tooling for hoisting fuel grids in the prior art is prone to lifting instability and deformation.

The utility model solves the above-mentioned technical problems through the following technical solutions: a spreader tooling for fuel grids in nuclear power plants, which is characterized in that the spreader tooling includes a spreader frame and several suspension columns;

One end of each suspender column is passed through the spreader frame, and is positioned on the spreader frame by a fixing device, and the suspension column extends downward relative to the spreader frame, and the suspender column The end of the other end is provided with a hoisting part, and the fuel grid to be hoisted is fixed by the hanging column through the hoisting part;

A plurality of hoisting parts are arranged on the frame of the sling, and the hoisting parts are used for hoisting the sling tooling by slings and a crane.

Preferably, the fixing device includes a bolt plate and a reference plate, the bolt plate is fixed on the spreader frame, and the reference plate is fixed on the bolt plate;

The end of one end of the suspension column is provided with a reference boss and a suspension lug of the suspension column, the suspension lug of the suspension column is fixed on the reference boss, and one end of the suspension column passes through the fixing device, so that the The reference boss is fixed on the reference plate.

Preferably, a plurality of notches are provided on the reference plate, and the notches are used for the positioning of the suspenders.

Preferably, at least two positioning slots are provided on the spreader frame, at least two of the fixing devices are correspondingly installed and positioned on the positioning slots, and the positioning slots are used for adjusting the positions of the fixing devices.

Preferably, each of the lifting parts includes a mounting plate and lifting lugs, the mounting plate is fixed on the bottom of the spreader frame corresponding to the fixing device, and the mounting plate extends into the spreader frame , the lifting lug is fixed on the mounting plate.

Preferably, the lifting lug is fixedly connected to the spreader frame.

Preferably, the lifting component is a foundation plate.

Preferably, the bottom of the spreader frame is also provided with a plurality of downwardly extending center piles, and when the spreader tooling and the fuel grid to be hoisted are installed, the center piles will be positioned on the fuel grid Inside.

Preferably, the central piles are symmetrically arranged on the bottom of the spreader frame.

The positive progress effect of the utility model lies in that the utility model is used for the fuel grid of the nuclear power plant with a simple structure and easy realization of the spreader tooling, and the operation of hoisting the fuel grid is simple, and the labor and machinery investment time is less, which can save a lot of construction period. The hanger tooling is matched with the opening of the grid bottom plate, and the vertical hoisting of a plurality of different types of grids can be satisfied by adjusting the position of the suspenders, so as to reduce the deformation of the grid.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model for the spreader tooling of the nuclear power plant fuel grid.

Fig. 2 is an enlarged view of part A in Fig. 1 .

Fig. 3 is an enlarged view of part B in Fig. 1 .

Detailed ways

Provide preferred embodiments of the utility model below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.

Fig. 1 is a structural schematic diagram of the utility model for the spreader tooling of the nuclear power plant fuel grid. Fig. 2 is an enlarged view of part A in Fig. 1 . Fig. 3 is an enlarged view of part B in Fig. 1 . As shown in FIG. 1 to FIG. 3 , the spreader tooling used for nuclear power plant fuel grids of the present invention includes a spreader frame 10 and several suspenders 30 . One end of each suspender 30 is passed through the spreader frame 10 and positioned on the spreader frame 10 through the fixing device 20 . Meanwhile, the hanging column 30 extends downward relative to the spreader frame 10 , and the other end of the hanging column 30 is provided with a lifting component 33 , so that the hanging column 30 can fix the fuel grid to be hoisted by the lifting component 33 . Here, the hoisting part 33 can preferably be a foundation plate. By adjusting the direction of the foundation plate, the lifting tool and the fuel grid to be hoisted can be fixed, and it is a direct contact body that bears the weight of the fuel grid during hoisting.

A plurality of lifting parts 50 are arranged on the spreader frame 10, which are used for hoisting the whole spreader tooling by slings and cranes. That is to say, when using the sling tool, the sling 50 on the sling frame 10 can be connected with the crane through slings, so as to form a complete sling tool. The hanging column 30 is mainly used for connecting the spreader frame 10 and the fuel grid to be hoisted, and can transfer the force of the fuel grid to be hoisted to the hanger tooling.

Here, the spreader frame 10 is formed by connecting multiple frame beams 11 , and the shape of the spreader frame 10 and the number of frame beams 11 used are not limited. For example, the spreader frame 10 in this embodiment is a rectangular structure formed by connecting frame beams 11 , which is only an example and does not represent a limitation on the shape and structure of the spreader frame 10 . The spreader frame 10 mainly plays the role of maintaining the stability of the spreader structure.

Preferably, the fixing device 20 includes a bolt plate 21 and a reference plate 22 , the bolt plate 21 is fixed on the frame beam 11 of the spreader frame 10 , and the reference plate 22 is fixed on the bolt plate 21 . In addition, a datum boss 31 and a davit lug 32 are provided at one end of the davit 30 , and the datum lug 32 is fixed on the datum boss 31 so that one end of the davit 30 passes through the entire fixing device 20 , and fix the reference boss 31 on the reference plate 22 . Further preferably, a plurality of notches 221 (as shown in FIGS. 2 and 3 ) are provided on the reference plate 22 , and the notches 221 are used for the positioning of the suspenders 30 . The bolt plate 21 here can fix the reference plate 22, the hanging column 30 and other components, and adjust the position of the bolt plate 21 according to the lug hole spacing of the fuel grid to be hoisted to realize the vertical hoisting of each point.

In addition, at least two positioning slots 40 are provided on the spreader frame 10 , so that at least two fixing devices 20 are correspondingly installed and positioned on the positioning slots 40 , where the positioning slots 40 are used to adjust the positions of the fixing devices 20 . The positioning slot 40 here can be selected from a large bolt plate, which is fixed on the frame beam 11, and several bolt holes are opened on it, and the large bolt plate is connected with the bolt plate 21 by bolts, thereby realizing the positioning of the bolt plate 21 and fixed.

Further preferably, each sling 50 includes a mounting plate 51 and lifting lugs 52, the mounting plate 51 is fixed on the bottom of the hanger frame 10 corresponding to the fixing device 20, and the mounting plate 51 extends into the spreader frame 10, so that the lifting lugs 52 is fixed on the mounting plate 51. Certainly, in order to enhance the strength of the lifting lug 52 , the lifting lug 52 may also be fixedly connected to the frame beam 11 of the spreader frame 10 .

Particularly preferably, a plurality of downwardly extending central piles 60 are provided at the bottom of the spreader frame 10 for positioning when the spreader tool is installed on the fuel grid. After the installation of the spreader tool and the fuel grid to be hoisted is completed, the central pile 60 is located in the fuel grid (not shown in the figure) to prevent the relative movement of the spreader tool and the fuel grid. Preferably, the center piles 60 are installed symmetrically on the bottom of the spreader frame 10 .

In actual use, after the spreader tooling is transported to the hoisting site, the hook of the crane is connected to the lifting lug 52 on the spreader frame 10 by rigging. Next, after the crane hook lifts the spreader frame 10 to the top of the fuel grid, the center pile 60 is used to find the correct position. Then, the crane lifts the hanging column 30, and the hanging column 30 is rotated so that the lifting part 33 and the lifting hole of the fuel grid are mutually formed at 90°. The entire operation process of hoisting the fuel grid by using the spreader tool is simple, and the investment time of personnel and machinery is small, which can save a lot of construction period.

Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present utility model, but these changes and modifications all fall within the protection scope of the present utility model.

Claims (9)

1. for a lifting tooling for nuclear power plant's fuel screen work, it is characterized in that, described lifting tooling comprises duel spreader frames and some davits;

One end of davit described in each is located in described duel spreader frames, and be positioned in described duel spreader frames by anchor fitting, described davit relative to described duel spreader frames to downward-extension, the end of the other end of described davit is provided with lifting part, the fuel screen work making described davit fixedly to be lifted by described lifting part;

Described duel spreader frames is provided with multiple lifting part, and described lifting part is used for by lifting tooling described in rigging and crane loading.

2., as claimed in claim 1 for the lifting tooling of nuclear power plant's fuel screen work, it is characterized in that, described anchor fitting comprises Bolt plate and datum plate, and described Bolt plate is fixed in described duel spreader frames, and described datum plate is fixed on described Bolt plate;

The end of one end of described davit is provided with benchmark boss and davit hanger, and described davit hanger is fixed on described benchmark boss, and one end of described davit, through described anchor fitting, makes described benchmark boss be fixed on described datum plate.

3. as claimed in claim 2 for the lifting tooling of nuclear power plant's fuel screen work, it is characterized in that, described datum plate is provided with multiple gap, and described gap is used for the location of described davit.

4. as claimed in claim 1 for the lifting tooling of nuclear power plant's fuel screen work, it is characterized in that, described duel spreader frames is provided with at least two positioning grooves, and at least two described anchor fittings are correspondingly installed and are positioned on described positioning groove, and described positioning groove is for regulating the position of described anchor fitting.

5. as claimed in claim 1 for the lifting tooling of nuclear power plant's fuel screen work, it is characterized in that, lifting part described in each comprises adapter plate and hanger, described adapter plate is fixed on the bottom of described duel spreader frames corresponding to described anchor fitting, and described adapter plate extends in described duel spreader frames, described hanger is fixed on described adapter plate.

6., as claimed in claim 5 for the lifting tooling of nuclear power plant's fuel screen work, it is characterized in that, described hanger is fixedly connected with described duel spreader frames.

7., as claimed in claim 1 for the lifting tooling of nuclear power plant's fuel screen work, it is characterized in that, plate based on described lifting part.

8. as claimed in claim 1 for the lifting tooling of nuclear power plant's fuel screen work, it is characterized in that, the bottom of described duel spreader frames is also provided with multiple Center stake to downward-extension, and when described lifting tooling is with after the fuel screen work installation lifted, described Center stake is positioned at described fuel screen work.

9., as claimed in claim 8 for the lifting tooling of nuclear power plant's fuel screen work, it is characterized in that, described Center stake is arranged on the bottom of described duel spreader frames symmetrically.